Dependency my_app is specified as a dependency but is not reachable by the system
While using erlang.mk
and relx
to build a newly-created Erlang application, I got the following error:
Failed to solve release:
Dependency my_app is specified as a dependency but is not reachable by the system.
It turns out that I was missing the modules
term in the src/my_app.app.src
file.
erlang.mk
needs it to be present (but empty), or it won’t write it to the ebin/my_app.app
file.
relx
needs it to be in the ebin/my_app.app
file, otherwise it fails with the above error.
I’d used rebar
to create the application skeleton, and it leaves this out.
The solution is simply to add it:
{application, my_app,
[
% etc.
{modules, []},
% etc.
]}.